<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>06_for_of循环</title>
</head>
<body>

<!--
for(let value of target){}循环遍历
  1. 遍历数组
  2. 遍历Set
  3. 遍历Map
  4. 遍历字符串
  5. 遍历伪数组
-->

<button>按钮1</button>
<button>按钮2</button>
<button>按钮3</button>

<script type="text/javascript">

    let arr = [1,2,3,4,5];
    for(let num of arr){
        console.log(num);
    }
    let set = new Set([1,2,3,4,5]);
    for(let num of set){
        console.log(num);
    }
    let str = 'abcdefg';
    for(let num of str){
        console.log(num);
    }
    let btns = document.getElementsByTagName('button');
    for(let btn of btns){
        console.log(btn.innerHTML);
    }

</script>
</body>

</html>